This is now implemented. Main chat rooms do not freeze automatically due to inactivity. I checked various chat rooms like Project Management, main chat room for Project Management and "Bar Sport", main chat room of Italian Language. Both the rooms are not frozen in spite of inactivity.
In PM Sta...
@ShadowWizardWearingMask Mith is right, Norm has done a science by creating a chat room on a very quiet site, then the supposed-to-be main chat room froze one day later...
@ShadowWizardWearingMask I googled "brown waves" and didn't find anything except something about surfing. Almost asked on English.SE "what is a brown wave?"
@AnnZen I pretty much always have a tab open with a chat tab open, even if I'm not at my computer, so I'll show as online even if I'm asleep or whatever.
(This has gotten less reliable as my computer dies a slow agonizing death, but the point stays.)